Substation communication transformation often starts with the data and telecontrol channels, with dispatching traffic at the back. ReviewOptical isolation renovation of a 220kV substation communication networkIn the implementation process, although the traffic channel started late, the change in the order of the computer room was obvious after the transformation was completed.

Why is the voice traffic ranked after the data channel?

The dispatch phone is a channel used directly by the operator. Any changes require people to be on duty and the call can be rolled back. The window for scheduling is limited; the cutover of the telecontrol and data channels is relatively easy to roll back. The on-site approach is to first complete optical isolation and backbone fiber core termination, determine the channel structure, and then cut traffic in the same window at once to avoid repeated stripping of the same optical cable. The general basis for judging the order is the difficulty of channel rollback, not that the traffic itself is unimportant.

Three things to check for common fiber multiplexing

Eight-door voice and data services are transmitted over the same fiber by multiplexing voice and data into one link respectively. Check item by item before transformation:

• The number of traffic ports and whether a network management interface is needed determines how many telephone optical transceivers to use;
• Data service rate and direction on the same fiber to avoid occupying the same channel resources;
• The power supply and alarm reporting method at both ends, and whether the traffic channel has predictable degradation performance when power is lost.

This site adopts8-way telephone + 1-way Internet phone optical transceiver, voice and network data are sent to the communication equipment room via the same fiber, reducing fiber core occupation; reuse on the equipment room side14-slot box transceiver rackCentralize the shelves and mark the business name slot by slot.

Ending and naming determine line checking speed

When the jumpers in the old computer room are in a mess, it is often necessary to check the wires one by one during maintenance and inspection. The transformation is named according to intervals and unified into end directions. The labels also mark the business type and the location number of the opposite end equipment, so that the personnel on duty can locate them without turning over the drawings. EB-LINK recommends that naming rules be written into the data during the planning stage. Inconsistent naming will require re-checking for every subsequent expansion.

The channel division and equipment supporting ideas for power scenarios can be viewed together on the power and new energy station communication transformation plan page.